: One famous gag features the letter "Y" being mocked by other vowels for only being a "semi-vowel". Family Guy S4E22: "Sibling Rivalry" Recap - TV Tropes
: After undergoing a vasectomy, Peter loses his sex drive, leaving Lois feeling neglected. To cope with her frustration, she begins overeating. [S4E22] Sibling Rivalry
: The bingeing eventually catches up with Lois, leading to a heart attack. She is rushed to the hospital for emergency liposuction, which returns her to her original size and ends their "weight-gain" phase. The Subplot: Stewie and Bertram : One famous gag features the letter "Y"